LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> GMC >> 1966 >> 2500 Automatic Trans >> Repair and Diagnosis >> Engine Performance >> Fuel Delivery >> ROCHESTER Model B Single Barrel >> Adjustment >> Float Drop
April 5, 2026: LEMON Manuals is launched! Read the announcement.

Float Drop

Hold air horn assembly upright with floats hanging free, then measure distance from surface of air horn gasket to bottom of float (see Fig 1). Distance should be as indicated in specifications. To adjust, bend tang at needle valve.

Fig 1: Float Drop Adjustment
G09325169Courtesy of GENERAL MOTORS COMPANY